Journal cover Journal topic
Atmospheric Chemistry and Physics An interactive open-access journal of the European Geosciences Union
Journal topic

Journal metrics

Journal metrics

  • IF value: 5.509 IF 5.509
  • IF 5-year value: 5.689 IF 5-year
    5.689
  • CiteScore value: 5.44 CiteScore
    5.44
  • SNIP value: 1.519 SNIP 1.519
  • SJR value: 3.032 SJR 3.032
  • IPP value: 5.37 IPP 5.37
  • h5-index value: 86 h5-index 86
  • Scimago H <br class='hide-on-tablet hide-on-mobile'>index value: 161 Scimago H
    index 161
Discussion papers
https://doi.org/10.5194/acp-2018-1286
© Author(s) 2019. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/acp-2018-1286
© Author(s) 2019. This work is distributed under
the Creative Commons Attribution 4.0 License.

Research article 02 Jan 2019

Research article | 02 Jan 2019

Review status
This discussion paper is a preprint. It is a manuscript under review for the journal Atmospheric Chemistry and Physics (ACP).

Detection of Outflow of Formaldehyde and Glyoxal from the African continent to the Atlantic Ocean with a MAX-DOAS Instrument

Lisa K. Behrens1, Andreas Hilboll1,2, Andreas Richter1, Enno Peters1,a, Leonardo M. A. Alvarado1, Anna B. Kalisz Hedegaard3,1, Folkard Wittrock1, John P. Burrows1, and Mihalis Vrekoussis2,1,4 Lisa K. Behrens et al.
  • 1Institute of Environmental Physics (IUP-UB), University of Bremen, Bremen, Germany
  • 2MARUM - Center for Marine Environmental Sciences, University of Bremen, Bremen, Germany
  • 3DLR - Institute of Atmospheric Physics, German Aerospace Center, Oberpfaffenhofen-Wessling, Germany
  • 4Energy, Environment and Water Research Center (EEWRC), The Cyprus Institute, Nicosia, Cyprus
  • anow at: DLR - Institute for protection of maritime infrastructures, German Aerospace Center, Bremerhaven, Germany

Abstract. Trace gas maps retrieved from satellite measurements show enhanced levels of the atmospheric volatile organic compounds formaldehyde (HCHO) and glyoxal (CHOCHO) over the Atlantic Ocean. To validate the spatial distribution of this continental outflow, ship-based measurements were taken during the project Continental Outflow of Pollutants towards the MArine tRoposphere (COPMAR). A Multi-AXis Differential Optical Absorption Spectrometer (MAX-DOAS) was operated on board the research vessel (RV) Maria S. Merian during the cruise MSM58/2. This cruise was conducted in October 2016 from Ponta Delgada (Azores) to Cape Town (South Africa), crossing between Cape Verde and the African continent. The instrument was continuously scanning the horizon looking towards the African continent. Enhanced levels of HCHO and CHOCHO were found in the area of expected outflow during this cruise. The observed spatial gradients of HCHO and CHOCHO along the cruise track agree with the spatial distributions from satellite measurements and MOZART-4 model simulations. The continental outflow from the African continent is observed in an elevated layer, higher than 1000 m, and probably originates from biogenic emissions or biomass burning according to FLEXPART emission sensitivities.

Lisa K. Behrens et al.
Interactive discussion
Status: final response (author comments only)
Status: final response (author comments only)
AC: Author comment | RC: Referee comment | SC: Short comment | EC: Editor comment
[Login for Authors/Co-Editors] [Subscribe to comment alert] Printer-friendly Version - Printer-friendly version Supplement - Supplement
Lisa K. Behrens et al.
Lisa K. Behrens et al.
Viewed  
Total article views: 336 (including HTML, PDF, and XML)
HTML PDF XML Total BibTeX EndNote
270 62 4 336 2 4
  • HTML: 270
  • PDF: 62
  • XML: 4
  • Total: 336
  • BibTeX: 2
  • EndNote: 4
Views and downloads (calculated since 02 Jan 2019)
Cumulative views and downloads (calculated since 02 Jan 2019)
Viewed (geographical distribution)  
Total article views: 169 (including HTML, PDF, and XML) Thereof 166 with geography defined and 3 with unknown origin.
Country # Views %
  • 1
1
 
 
 
 
Cited  
Saved  
No saved metrics found.
Discussed  
No discussed metrics found.
Latest update: 23 Mar 2019
Publications Copernicus
Download
Short summary
MAX-DOAS measurements were conducted on the research vessel Maria S. Merian during a cruise from the Azores to South Africa in October 2016. The measurements indicate enhanced levels of HCHO and CHOCHO over the remote Atlantic Ocean, which is unexpected due to their short lifetime. Precursors of these gases or gas-aerosol combinations might be transported. Model simulations indicate potential source regions over the African continent, probably related to biomass burning or biogenic emissions.
MAX-DOAS measurements were conducted on the research vessel Maria S. Merian during a cruise from...
Citation